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USB: serial: remove usb_serial_disconnect call in all drivers
[linux-beck.git] / drivers / usb / serial / empeg.c
1 /*
2  * USB Empeg empeg-car player driver
3  *
4  *      Copyright (C) 2000, 2001
5  *          Gary Brubaker (xavyer@ix.netcom.com)
6  *
7  *      Copyright (C) 1999 - 2001
8  *          Greg Kroah-Hartman (greg@kroah.com)
9  *
10  *      This program is free software; you can redistribute it and/or modify
11  *      it under the terms of the GNU General Public License, as published by
12  *      the Free Software Foundation, version 2.
13  *
14  * See Documentation/usb/usb-serial.txt for more information on using this
15  * driver
16  */
17
18 #include <linux/kernel.h>
19 #include <linux/errno.h>
20 #include <linux/init.h>
21 #include <linux/slab.h>
22 #include <linux/tty.h>
23 #include <linux/tty_driver.h>
24 #include <linux/tty_flip.h>
25 #include <linux/module.h>
26 #include <linux/spinlock.h>
27 #include <linux/uaccess.h>
28 #include <linux/usb.h>
29 #include <linux/usb/serial.h>
30
31 static bool debug;
32
33 /*
34  * Version Information
35  */
36 #define DRIVER_VERSION "v1.3"
37 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Gary Brubaker <xavyer@ix.netcom.com>"
38 #define DRIVER_DESC "USB Empeg Mark I/II Driver"
39
40 #define EMPEG_VENDOR_ID                 0x084f
41 #define EMPEG_PRODUCT_ID                0x0001
42
43 /* function prototypes for an empeg-car player */
44 static int  empeg_startup(struct usb_serial *serial);
45 static void empeg_init_termios(struct tty_struct *tty);
46
47 static const struct usb_device_id id_table[] = {
48         { USB_DEVICE(EMPEG_VENDOR_ID, EMPEG_PRODUCT_ID) },
49         { }                                     /* Terminating entry */
50 };
51
52 MODULE_DEVICE_TABLE(usb, id_table);
53
54 static struct usb_driver empeg_driver = {
55         .name =         "empeg",
56         .id_table =     id_table,
57 };
58
59 static struct usb_serial_driver empeg_device = {
60         .driver = {
61                 .owner =        THIS_MODULE,
62                 .name =         "empeg",
63         },
64         .id_table =             id_table,
65         .num_ports =            1,
66         .bulk_out_size =        256,
67         .throttle =             usb_serial_generic_throttle,
68         .unthrottle =           usb_serial_generic_unthrottle,
69         .attach =               empeg_startup,
70         .init_termios =         empeg_init_termios,
71 };
72
73 static struct usb_serial_driver * const serial_drivers[] = {
74         &empeg_device, NULL
75 };
76
77 static int empeg_startup(struct usb_serial *serial)
78 {
79         int r;
80
81         if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
82                 dev_err(&serial->dev->dev, "active config #%d != 1 ??\n",
83                         serial->dev->actconfig->desc.bConfigurationValue);
84                 return -ENODEV;
85         }
86
87         r = usb_reset_configuration(serial->dev);
88
89         /* continue on with initialization */
90         return r;
91 }
92
93 static void empeg_init_termios(struct tty_struct *tty)
94 {
95         struct ktermios *termios = tty->termios;
96
97         /*
98          * The empeg-car player wants these particular tty settings.
99          * You could, for example, change the baud rate, however the
100          * player only supports 115200 (currently), so there is really
101          * no point in support for changes to the tty settings.
102          * (at least for now)
103          *
104          * The default requirements for this device are:
105          */
106         termios->c_iflag
107                 &= ~(IGNBRK     /* disable ignore break */
108                 | BRKINT        /* disable break causes interrupt */
109                 | PARMRK        /* disable mark parity errors */
110                 | ISTRIP        /* disable clear high bit of input characters */
111                 | INLCR         /* disable translate NL to CR */
112                 | IGNCR         /* disable ignore CR */
113                 | ICRNL         /* disable translate CR to NL */
114                 | IXON);        /* disable enable XON/XOFF flow control */
115
116         termios->c_oflag
117                 &= ~OPOST;      /* disable postprocess output characters */
118
119         termios->c_lflag
120                 &= ~(ECHO       /* disable echo input characters */
121                 | ECHONL        /* disable echo new line */
122                 | ICANON        /* disable erase, kill, werase, and rprnt special characters */
123                 | ISIG          /* disable interrupt, quit, and suspend special characters */
124                 | IEXTEN);      /* disable non-POSIX special characters */
125
126         termios->c_cflag
127                 &= ~(CSIZE      /* no size */
128                 | PARENB        /* disable parity bit */
129                 | CBAUD);       /* clear current baud rate */
130
131         termios->c_cflag
132                 |= CS8;         /* character size 8 bits */
133
134         tty_encode_baud_rate(tty, 115200, 115200);
135 }
136
137 module_usb_serial_driver(empeg_driver, serial_drivers);
138
139 MODULE_AUTHOR(DRIVER_AUTHOR);
140 MODULE_DESCRIPTION(DRIVER_DESC);
141 MODULE_LICENSE("GPL");
142
143 module_param(debug, bool, S_IRUGO | S_IWUSR);
144 MODULE_PARM_DESC(debug, "Debug enabled or not");